<template>
  <div id="app">
    <div class="block">
      {{ opt }}
      <span class="demonstration">默认显示所有Tag</span>
      <el-cascader :options="options" :props="props" clearable v-model="opt" @change="changeOpt"></el-cascader>
    </div>
    <div class="block">
      <span class="demonstration">折叠展示Tag</span>
      <el-cascader :options="options" :props="props" collapse-tags clearable></el-cascader>
    </div>
  </div>
</template>
<script>
import Cascader from './components/cascader/index.js'
export default {
  components: {
    'el-cascader': Cascader
  },
  data() {
    return {
      opt: [],
      props: { multiple: true },
      options: [{
        value: 1,
        label: '东南',
        children: [{
          value: 2,
          label: '上海',
          children: [
            { value: 3, label: '普陀' },
            { value: 4, label: '黄埔' },
            { value: 5, label: '徐汇' }
          ]
        }, {
          value: 7,
          label: '江苏',
          children: [
            { value: 8, label: '南京' },
            { value: 9, label: '苏州' },
            { value: 10, label: '无锡' }
          ]
        }, {
          value: 12,
          label: '浙江',
          children: [
            { value: 13, label: '杭州' },
            { value: 14, label: '宁波' },
            { value: 15, label: '嘉兴' }
          ]
        }]
      }, {
        value: 17,
        label: '西北',
        children: [{
          value: 18,
          label: '陕西',
          children: [
            { value: 19, label: '西安' },
            { value: 20, label: '延安' }
          ]
        }, {
          value: 21,
          label: '新疆维吾尔族自治区',
          children: [
            { value: 22, label: '乌鲁木齐' },
            { value: 23, label: '克拉玛依' }
          ]
        }]
      }]
    };
  },
  methods: {
    changeOpt: (val) => {
      console.log(val, 'val')
    }
  }
};
</script>
<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>
